Entries in National Cannabis Industry Association
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David McNew/Getty Images(WASHINGTON) -- Supporters of decriminalizing marijuana are hoping to build momentum on Capitol Hill after a historic election that saw the politics of pot take center stage in four states.

The marijuana industry's public relations campaign has so far been limited to states, especially California, where a ballot initiative to legalize weed failed in November.

But on Wednesday, the National Cannabis Industry Association, launched in December to represent the interests of legal marijuana growers and distributors, will hold the first congressional lobbying day in the nation's capital, hoping to shore up support for an industry they say could bring billions of dollars in revenue to the government.

The industry already has some notable lawmakers on its side.

Rep. Barney Frank, D-Mass., has in the past introduced legislation to remove federal penalties for personal use of marijuana. Libertarian-leaning Rep. Ron Paul, R-Texas, is also an outspoken advocate of full marijuana legalization.

Last summer, Frank and 15 other lawmakers sent a letter to Treasury Secretary Tim Geithner asking his agency to set rules that provide financial services to medical marijuana dispensaries and to assure banks they won't be penalized for conducting such business.

Wednesday's lobbying efforts will focus on eliminating such restrictions and on easing the tax burden on medical marijuana clinics.

Supporters of decriminalizing marijuana say it will help the United States in the long term by boosting profits for the government. Socially, they say it will boost resources to crack down on hard drugs and will curb teen marijuana use, which is on the rise.﻿